Tax Deadline 2025 Massachusetts 2025.  — the massachusetts department of revenue (dor) has announced an amnesty program as part of the fiscal year 2025 budget act. Thanks to the observance of patriots' day, massachusetts is one of only two states where residents will have two extra days to file their taxes this year.

 — from november 1 to december 30, 2025, the commonwealth of massachusetts will waive most penalties for eligible taxpayers who file outstanding.  — when is the deadline?